What were you trying to do that didn't work?

Trying to run 'dnf-automatic install'  on system with network issue.

Please provide the package NVR for which bug is seen:

Customer has below version of package installed:
~~~
dnf-4.7.0-11.el8.noarch                                     Thu May  4 11:58:26 2023

but the buggy code is also present in latest version available through CDN for 8.10

dnf-4.7.0-20.el8.noarch

How reproducible:

100%

Steps to reproduce

1.  Have a system with network issue
2.  Run dnf-automatic command on it

Expected results

  Command shows warning/error message failing to send email instead of crashing with a traceback. 

Actual results

[daria.vasileva@crashing-wasp ~]$ sudo dnf-automatic install
Updating Subscription Management repositories.
Last metadata expiration check: 1:23:02 ago on Tue 02 Jul 2024 01:37:14 PM EEST.
Traceback (most recent call last):
  File "/bin/dnf-automatic", line 32, in <module>
    sys.exit(dnf.automatic.main.main(sys.argv[1:]))
  File "/usr/lib/python3.6/site-packages/dnf/automatic/main.py", line 330, in main
    emitters.commit()
  File "/usr/lib/python3.6/site-packages/dnf/util.py", line 528, in fn
    return list(map(call_what, self))
  File "/usr/lib/python3.6/site-packages/dnf/util.py", line 527, in call_what
    return method(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/dnf/automatic/emitter.py", line 106, in commit
    smtp = smtplib.SMTP(self._conf.email_host, timeout=300)
  File "/usr/lib64/python3.6/smtplib.py", line 251, in _init_
    (code, msg) = self.connect(host, port)
  File "/usr/lib64/python3.6/smtplib.py", line 336, in connect
    self.sock = self._get_socket(host, port, self.timeout)
  File "/usr/lib64/python3.6/smtplib.py", line 307, in _get_socket
    self.source_address)
  File "/usr/lib64/python3.6/socket.py", line 724, in create_connection
    raise err
  File "/usr/lib64/python3.6/socket.py", line 713, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused